An amplifier of extended and more controlled bass and treble but still retains the wonderfully detailed mid range of the original design. The amplifier became the A21a, a reference amplifier on many continents. Further improvements have achieved significant enhancement of performance and the amplifier has been rebranded as the Sugden A21a Series 2.

The A21SE is a further expansion of the musical performance available from the Sugden single ended Class A output circuitry. Designed to provide more power output, greater speaker compatibility and a larger sound stage, it is not an uprated A21 Series 2 but a definitive amplifier in its own right.

The largest and most powerful integrated amplifier in the Sugden family which takes advantage of the initial Sugden class A output configuration. The Pure Class A solid state output stage equipped with greater power from a custom-built transformer and low impedance supply can project and fill an enormous holographic sound stage with ‘simply more music’.